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WO2016092868A1 - Engin de chantier - Google Patents

Engin de chantier Download PDF

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Publication number
WO2016092868A1
WO2016092868A1 PCT/JP2015/055084 JP2015055084W WO2016092868A1 WO 2016092868 A1 WO2016092868 A1 WO 2016092868A1 JP 2015055084 W JP2015055084 W JP 2015055084W WO 2016092868 A1 WO2016092868 A1 WO 2016092868A1
Authority
WO
WIPO (PCT)
Prior art keywords
work
vehicle
cooling device
work vehicle
engine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2015/055084
Other languages
English (en)
Japanese (ja)
Inventor
祐士 押川
隆司 野田
平 尾嵜
卓矢 植村
博 伊戸川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Komatsu Ltd
Original Assignee
Komatsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Komatsu Ltd filed Critical Komatsu Ltd
Priority to US15/526,842 priority Critical patent/US10550545B2/en
Publication of WO2016092868A1 publication Critical patent/WO2016092868A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/0858—Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
    • E02F9/0866—Engine compartment, e.g. heat exchangers, exhaust filters, cooling devices, silencers, mufflers, position of hydraulic pumps in the engine compartment
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
    • E02F3/7604—Combinations of scraper blades with soil loosening tools working independently of scraper blades
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
    • E02F3/7609—Scraper blade mounted forwardly of the tractor on a pair of pivoting arms which are linked to the sides of the tractor, e.g. bulldozers
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/0833—Improving access, e.g. for maintenance, steps for improving driver's access, handrails
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/0858—Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
    • E02F9/0883—Tanks, e.g. oil tank, urea tank, fuel tank
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/16—Cabins, platforms, or the like, for drivers
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/2004—Control mechanisms, e.g. control levers
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/2025—Particular purposes of control systems not otherwise provided for
    • E02F9/205—Remotely operated machines, e.g. unmanned vehicles
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
    • E02F9/2062—Control of propulsion units
    • E02F9/2066—Control of propulsion units of the type combustion engines

Definitions

  • the present invention relates to a work vehicle.
  • the cooling device is disposed at the front end of the vehicle body.
  • the cooling device is arranged in such a position, earth and sand may enter the cooling device from the front during work, and the performance of the cooling device may be deteriorated.
  • An object of the present invention is to provide a technique capable of preventing the performance degradation of the cooling device.
  • a work vehicle includes a vehicle main body, a traveling device, a drive source, and a cooling device.
  • the traveling device is provided below the vehicle body.
  • the drive source is disposed at the front portion of the vehicle body.
  • the driving source generates driving force for the traveling device.
  • the cooling device is disposed behind the drive source and on one side of the vehicle body in the vehicle width direction.
  • the vehicle body may have a work area at a position facing the cooling device behind the drive source.
  • the work vehicle may further include a maintenance target device that requires maintenance and is disposed between the drive source and the work area.
  • the work vehicle may further include a fuel tank that is disposed at the rear of the vehicle main body and extends in the vehicle width direction with the vehicle width direction center of the vehicle main body as a base point.
  • the work vehicle may further include a power transmission mechanism and a first partition plate.
  • the power transmission mechanism may transmit the driving force generated by the driving source to the traveling device.
  • the power transmission mechanism may be located below the work area.
  • the first partition plate may divide the work area and the power transmission mechanism.
  • the first partition plate may have a first inspection port that leads from the work area to the power transmission mechanism.
  • the work vehicle may further include a first covering member that covers the cooling device.
  • the first covering member may have a second inspection port between the work area and the cooling device.
  • the work vehicle may further include a second covering member that covers the drive source.
  • the second covering member may have a third inspection port between the work area and the drive source.
  • the second covering member may have a third inspection port between the work area and the maintenance target device.
  • the work area may be surrounded by a cooling device, a maintenance target device, and a fuel tank.
  • the traveling device should have a crawler track.
  • the cooling device may overlap the crawler track when viewed from above.
  • a work vehicle includes a vehicle main body, a traveling device, a drive source, a work area, and a covering member.
  • the traveling device is provided below the vehicle body.
  • the driving source generates driving force for the traveling device.
  • the drive source is disposed at the front portion of the vehicle body.
  • the work area is provided behind the drive source.
  • the covering member covers the drive source.
  • the covering member has a third inspection port that leads from the work area to the drive source.
  • the work vehicle may be further provided with a cooling device disposed on the side of the work area and on one side of the vehicle body in the vehicle width direction.
  • the work vehicle may further include a power transmission mechanism and a first partition plate.
  • the power transmission mechanism may transmit the driving force generated by the driving source to the traveling device.
  • the power transmission mechanism may be located below the work area.
  • the first partition plate may divide the work area and the power transmission mechanism.
  • the first partition plate may have a first inspection port that leads from the work area to the power transmission mechanism.
  • the cooling device is disposed behind the drive source disposed in the front portion of the vehicle body and on one side in the vehicle width direction of the vehicle body. Therefore, earth and sand do not enter the cooling device from the front during work. Therefore, the work vehicle can prevent the performance degradation of the cooling device.
  • 1 is a side view of a work vehicle according to a first embodiment.
  • 1 is a top view of a work vehicle according to a first embodiment.
  • 1 is a perspective view of a work vehicle according to a first embodiment. It is a peripheral view of the hatch of the work vehicle concerning a 1st embodiment. It is a peripheral view of the hatch in the work vehicle with a cab. It is the figure which showed the pitch back amount of the working vehicle which concerns on 1st Embodiment. It is the figure which showed the pitch back amount in the conventional bulldozer. It is a top view of the work vehicle which concerns on 2nd Embodiment. It is a perspective view of the work vehicle which concerns on 2nd Embodiment.
  • FIG. 3 is a block diagram of a control system that controls the work vehicle according to the first to third embodiments.
  • FIG. 5 is a control block diagram for controlling a work vehicle according to the first to third embodiments.
  • FIG. 1 is a side view of a work vehicle 1 according to the first embodiment of the present invention.
  • FIG. 2 is a top view of the work vehicle 1 in a state in which a cover 6 described later is removed.
  • the work vehicle 1 includes a traveling device 2, a vehicle body 3, a first work machine 4, a second work machine 5, and a cover 6.
  • the work vehicle 1 according to the present embodiment is a vehicle without a driver's cab, more specifically, a bulldozer without a driver's cab.
  • the traveling device 2 is a device for traveling the vehicle.
  • the work vehicle 1 can perform work such as excavation and leveling using the first work machine 4 and the second work machine 5.
  • the first work machine 4 is, for example, a blade.
  • the second work machine 5 is, for example, a ripper.
  • the traveling device 2 has a first crawler belt 11 and a second crawler belt 12.
  • the work vehicle 1 travels by driving the first crawler belt 11 and the second crawler belt 12. By changing the driving speed of the first crawler belt 11 and the driving speed of the second crawler belt 12, the work vehicle 1 turns.
  • the vehicle body 3 is provided behind the first work machine 4.
  • the traveling device 2 is provided below the vehicle body 3.
  • the vehicle width direction is the direction in which a pair of traveling devices 2 are arranged side by side.
  • the front direction is a direction perpendicular to the vehicle width direction and refers to a direction from the center of the vehicle main body 3 toward an arrangement position of an engine 24 described later.
  • the rear is the opposite direction of the front.
  • Left and right means the left and right directions in the state of facing forward.
  • the left-right direction may be rephrased as the vehicle width direction.
  • Up and down means the up and down direction in the state of facing forward.
  • the positive direction of the x-axis (+ x direction), the negative direction of the x-axis ( ⁇ x direction), and the x-axis direction indicate directions called a backward direction, a forward direction, and a front-rear direction, respectively.
  • the y-axis positive direction (+ y direction), the y-axis negative direction ( ⁇ y direction), and the y-axis direction indicate directions called a right direction, a left direction, and a left-right direction (vehicle width direction), respectively.
  • the z-axis positive direction (+ z direction), the z-axis negative direction ( ⁇ z direction), and the z-axis direction indicate directions called an upward direction, a downward direction, and a vertical direction, respectively.
  • the work vehicle 1 includes an engine 24, an exhaust treatment device 26, and an after cooler 28.
  • the engine 24 is, for example, a diesel engine.
  • the engine 24 is a drive source that generates a driving force that drives the traveling device 2, the first work machine 4, and the second work machine 5.
  • the driving force generated by the engine 24 is distributed to a hydraulic pump that drives the first working machine 4 and the second working machine 5 and a power transmission mechanism 36 described later by a PTO (power take-off) (not shown).
  • the exhaust treatment device 26 purifies the exhaust of the engine 24.
  • the aftercooler 28 is an aftercooler of the engine 24.
  • the exhaust treatment device 26 and the aftercooler 28 are disposed above the engine 24.
  • Work vehicle 1 includes an engine room 20 covered with a first exterior member 20c.
  • the engine chamber 20 stores an engine 24, an exhaust treatment device 26, and an after cooler 28.
  • the first exterior member 20 c covers the engine 24, the exhaust treatment device 26, and the after cooler 28.
  • the engine room 20 is located on the front side of the vehicle body 3 and defines the front portion of the vehicle body 3.
  • the engine 24, the exhaust treatment device 26, and the after cooler 28 are disposed at the front portion of the vehicle body 3.
  • the upper surface of the first exterior member 20c rises away from the first cylinder 16a and the second cylinder 16b, which will be described later, and its upper end forms a horizontal plane. This upper end portion is referred to as an upper end portion UE.
  • the first exterior member 20c may be referred to as a second covering member.
  • the after-cooler 28 is arranged on the rear side of the center Cy in the front-rear direction of the engine room 20.
  • the aftercooler 28 is a device that requires maintenance by an operator.
  • the aftercooler 28 may be called a maintenance target device.
  • the work vehicle 1 includes a power transmission mechanism 36, a hydraulic pump 37, and a control valve 38.
  • the power transmission mechanism 36 is connected to the engine 24 and transmits the driving force generated by the engine 24 to the traveling device 2.
  • the power transmission mechanism 36 includes, for example, a transmission, a torque converter, and a steering mechanism.
  • the hydraulic pump 37 is driven by the driving force of the engine 24.
  • the hydraulic oil discharged from the hydraulic pump 37 is supplied to various members of the power transmission mechanism 36 (for example, a clutch of a transmission, a clutch and a brake of a steering mechanism) via a control valve 38.
  • the control valve 38 controls the hydraulic pressure supplied to the various members described above of the power transmission mechanism 36.
  • the control valve 38 is controlled by an electric signal.
  • the work vehicle 1 includes a power transmission mechanism chamber 30 below the first partition plate U1.
  • the power transmission mechanism chamber 30 is a region that is in contact with the lower portion 20b of the engine chamber 20 and is surrounded by a vehicle body frame (not shown) and the first partition plate U1.
  • the power transmission mechanism chamber 30 stores a power transmission mechanism 36, a hydraulic pump 37, and a control valve 38.
  • Work vehicle 1 further includes a first cooling device 48.
  • the first cooling device 48 includes, for example, a radiator that cools a refrigerant for cooling the engine 24, and may further include an oil cooler that cools hydraulic oil.
  • the first cooling device 48 is disposed behind the engine 24 and on one side of the vehicle body 3 in the vehicle width direction.
  • the first cooling device 48 is located on the right side of the center Cx of the vehicle body 3 in the vehicle width direction.
  • the first cooling device 48 extends rearward on the rear side of the engine 24 in a top view.
  • the work vehicle 1 includes a second exterior member 40 c that covers the first cooling device 48.
  • a region surrounded by the second exterior member 40 c is referred to as a cooling device chamber 40.
  • the cooling device chamber 40 has a substantially quadrangular prism shape.
  • the cooling device chamber 40 is adjacent to the engine chamber 20.
  • the cooling device chamber 40 is disposed outside the engine chamber 20 in the vehicle width direction.
  • the cooling device chamber 40 is disposed on one side of the vehicle body 3 in the vehicle width direction.
  • the cooling device chamber 40 is located on the right side of the right end RE of the engine chamber 20.
  • the cooling device chamber 40 extends rearward on the rear side from the first side surface S1 corresponding to the rear end of the engine chamber 20.
  • the second exterior member 40c may be referred to as a first covering member.
  • the work vehicle 1 includes a fuel tank 50 behind the first cooling device 48.
  • the fuel tank 50 has a prismatic shape having side surfaces that are inclined upward and rearward.
  • the fuel tank 50 is in contact with the rear end BE of the cooling device chamber 40 and extends leftward.
  • the fuel tank 50 is separated from the engine compartment 20.
  • the fuel tank 50 is disposed at the rear end (rear part) of the vehicle body 3.
  • the fuel tank 50 extends in the vehicle width direction with the center Cx in the vehicle width direction of the vehicle body 3 as a base point. Referring to FIG. 1, the fuel tank 50 is disposed above the power transmission mechanism chamber 30.
  • a plane that passes through the upper end UE of the engine chamber 20 and extends rearward and in the horizontal direction is defined as a first virtual plane VP1.
  • a plane that passes through the right end RE of the engine compartment 20 and extends rearward and in the vertical direction is defined as a second virtual plane VP2.
  • a plane that passes through the left end LE of the engine chamber 20 and extends rearward and in the vertical direction is defined as a third virtual plane VP3.
  • a front side surface of the fuel tank 50 is defined as a second side surface S2. 1 and 2, the first virtual plane VP1, the second virtual plane VP2, and the third virtual plane VP3 are displayed by two-dot chain lines.
  • the space 100 surrounded by the first virtual plane VP1, the second virtual plane VP2, the third virtual plane VP3, the first side surface S1, the second side surface S2, and the first partition plate U1 is hollow.
  • This space 100 is called a work area.
  • the vehicle body 3 has a work area 100 at a position facing the first cooling device 48 behind the engine 24.
  • the work area 100 is surrounded by a power transmission mechanism chamber 30, a cooling device chamber 40, a fuel tank 50, and a first additional storage chamber 55 described later.
  • the work area 100 is surrounded by the first cooling device 48, the aftercooler 28, and the fuel tank 50.
  • Work vehicle 1 further includes a hydraulic oil tank (not shown) and a reducing agent tank (not shown) used by exhaust treatment device 26.
  • the hydraulic oil tank and the reducing agent tank are covered with the third exterior member 55c.
  • a region surrounded by the third exterior member 55 c is referred to as a first additional storage chamber 55.
  • the first additional storage chamber 55 has a substantially quadrangular prism shape.
  • the first additional storage chamber 55 is adjacent to the fuel tank 50.
  • the first additional storage chamber 55 extends rearward behind the rear end S1 of the engine chamber 20.
  • the first additional storage chamber 55 is located on the left side of the engine chamber 20.
  • the first additional storage chamber 55 is located on the left side of the center Cx of the vehicle body 3 in the vehicle width direction.
  • the first additional storage chamber 55 is disposed on the other side opposite to the one side on which the cooling device chamber 40 is disposed.
  • the first additional storage chamber 55 is spaced apart from the cooling device chamber 40.
  • the first additional storage chamber 55 is disposed above the power transmission mechanism chamber 30.
  • a gap spaced apart by a distance D in the horizontal direction is provided between the first additional storage chamber 55 and the engine chamber 20.
  • the distance D is, for example, a length of 450 mm or more of the width of a walking path for walking on a construction machine defined by ISO 2867. Thereby, the worker can enter the work area 100 through this gap.
  • the cover 6 is formed so as to cover the work area 100 and close the gap.
  • the upper surface of the cover 6 is formed along the upper end portion UE of the engine compartment 20.
  • a vent hole 6a is provided in the portion of the cover 6 that closes the gap. The cover 6 is removed when the operator performs maintenance work.
  • the first additional storage chamber 55 is adjacent to the fuel tank 50 in the present embodiment, the first additional storage chamber 55 is adjacent to the engine chamber 20, and the first additional storage chamber 55 and the fuel tank 50 are A gap spaced apart by a distance D in the horizontal direction may be provided. Even in this case, the cover 6 may close the gap between the first additional storage chamber 55 and the fuel tank 50.
  • FIG. 3 is a perspective view of the work vehicle 1 according to the first embodiment.
  • the work vehicle 1 from which the first work machine 4, the second work machine 5, and the cover 6 are removed is displayed.
  • the second crawler belt 12 is schematically displayed.
  • the first exterior member 20c of the engine compartment 20 includes a third inspection port 21 that can be opened and closed on the first side surface S1.
  • the third inspection port 21 is located between the work area 100 and the engine 24 and communicates from the work area 100 to the engine 24.
  • the after cooler 28 is located behind the third inspection port 21.
  • the aftercooler 28 is disposed between the engine 24 and the work area 100. When the operator enters the work area 100, the aftercooler 28 can be easily maintained by opening the third inspection port 21.
  • the cooling device chamber 40 is disposed above the power transmission mechanism chamber 30.
  • the second exterior member 40c of the cooling device chamber 40 includes a second inspection port 42 that can be opened and closed on the third side surface S3.
  • the third side surface S3 is a left side surface of the cooling device chamber 40 (a side surface facing the vehicle width direction center Cx of the vehicle main body 3).
  • the third side surface S3 is on the right side (one side in the vehicle width direction of the vehicle main body 3 described above) than the first side surface S1.
  • a first cooling device 48 is located behind the second inspection port 42.
  • the second inspection port 42 is located between the first cooling device 48 and the work area 100. When the worker enters the work area 100, the first cooling device 48 can be easily maintained by opening the second inspection port 42.
  • a vent hole 41 is also provided in the third side surface S3.
  • a vent hole 43 is also provided in the fourth side surface S4 (see FIG. 2) which is the right side surface of the cooling device chamber 40 (the side surface opposite to the third side surface S3 in the left-right direction).
  • the first partition plate U1 partitions the work area 100 and the power transmission mechanism chamber 30. 2 and 3, the first partition plate U1 includes a hatch 32 that can be opened and closed.
  • the hatch 32 may be called a first inspection port.
  • a power transmission mechanism 36 is disposed below the hatch 32 (that is, below the work area 100), and the hatch 32 communicates from the work area 100 to the power transmission mechanism 36.
  • FIG. 4 is a peripheral view of the hatch 32 of the work vehicle 1 according to the first embodiment.
  • the work area 100 is provided from the first side surface S1 to the second side surface S2.
  • the first distance L1 which is the distance in the front-rear direction between the first side surface S1 and the second side surface S2 is longer than half (1/2 W) of the length W in the front-rear direction of the power transmission mechanism 36.
  • the first distance L1 is 1.5 m or more and is a value close to the length W of the power transmission mechanism 36 in the front-rear direction.
  • FIG. 5 as a comparative example is a peripheral view of a hatch in a work vehicle having a conventional cab.
  • the hatch 132 is provided on the floor surface 131 of the cab 130.
  • the width L0 in the front-rear direction of the hatch 132 is short.
  • the front-rear width L0 of the hatch 132 is much shorter than half (1 / 2W) of the front-rear width W of the power transmission mechanism 36. For this reason, it is very difficult to access the power transmission mechanism 36 and the equipment (particularly the control valve 38) associated with the power transmission mechanism 36 from the hatch 132.
  • the operator can easily access the power transmission mechanism 36, the hydraulic pump 37 attached to the power transmission mechanism 36, and the control valve 38 by opening the hatch 32.
  • the power transmission mechanism 36 and the equipment associated with the power transmission mechanism 36 can be easily maintained.
  • the vehicle body 3 further includes a first fender 13 and a second fender 14.
  • the first fender 13 is provided directly above the first crawler belt 11.
  • the second fender 14 is provided directly above the second crawler belt 12.
  • the cooling device chamber 40 is disposed immediately above the first fender 13. As shown in FIG. 2, the cooling device chamber 40 overlaps the first crawler belt 11 in a top view.
  • the first cooling device 48 overlaps the first crawler belt 11.
  • the first additional storage chamber 55 is disposed immediately above the second fender 14. Therefore, as shown in FIG. 2, the first additional storage chamber 55 overlaps the second crawler belt 12 in a top view.
  • the first crawler belt 11 is provided on the right side of the vehicle body 3 and extends in the front-rear direction.
  • the second crawler belt 12 is provided on the left side of the vehicle main body and extends in the front-rear direction.
  • the fuel tank 50 extends from the first fender 13 to the second fender 14.
  • the fuel tank 50 is disposed from one end of the vehicle body 3 in the vehicle width direction to the other end.
  • the fuel tank 50 is located at the rear end (rear part) of the vehicle body 3.
  • a body frame is provided at the end of the vehicle body 3.
  • the fuel tank 50 is supported by the first fender 13, the second fender 14, and the vehicle body frame. Therefore, even the heavy fuel tank 50 is supported stably.
  • the second crawler belt 12 includes a second driving wheel (sprocket) 12a, a second driven wheel (idler) 12b, a plurality of second carrier rollers 12c, and a plurality of track rollers 12d.
  • These members are rotating members that rotate when the second crawler belt 12 moves.
  • the 2nd driven wheel 12b is a rotation member nearest to the front-end part WFE which is an edge part of the front side of the traveling apparatus 2 (2nd crawler belt 12).
  • the second drive wheel 12a is a rotating member closest to the rear end WRE of the traveling device 2 (second crawler belt 12).
  • the first crawler belt 11 and the second crawler belt 12 are symmetrical with respect to the central axis Cx with respect to the vehicle width direction of the vehicle body 3, so that the first crawler belt 11 also has the same structure as the second crawler belt 12. ing.
  • the second side surface S2 of the fuel tank 50 is located behind the front end point P1 of the second drive wheel 12a. Since the first crawler belt 11 also has the same structure as the second crawler belt 12, it can also be said that the second side surface S2 of the fuel tank 50 is located behind the front end point of the drive wheels of the first crawler belt 11. .
  • the driven wheel may be a rotating member closest to the rear end WRE.
  • the second side surface S2 of the fuel tank 50 is located on the rear side of the front end point of the driven wheel that is the rotation member closest to the rear end portion WRE.
  • the first work machine 4 is provided in front of the engine room 20.
  • the first work machine 4 includes a blade 15 and a blade control cylinder 16.
  • the blade control cylinder 16 is a hydraulic cylinder.
  • the blade 15 is disposed in front of the vehicle body 3 and is provided so as to be movable in the vertical direction.
  • the blade control cylinder 16 includes a first cylinder 16a, a second cylinder 16b, a third cylinder 16c, and a fourth cylinder 16d.
  • the first cylinder 16a and the second cylinder 16b are respectively attached to the right front corner and the left front corner of the engine chamber 20 in a top view.
  • the third cylinder 16 c and the fourth cylinder 16 d are connected to the first work machine 4 and the frame that supports the first work machine 4 attached to the traveling device 2. That is, the third cylinder 16c and the fourth cylinder 16d are attached to the traveling device 2.
  • the first cylinder 16a and the second cylinder 16b are so-called lift cylinders and move the blade 15 up and down.
  • the third cylinder 16c and the fourth cylinder 16d are so-called tilt cylinders and control the pitch angle of the blade 15.
  • the blade 15 may be configured such that the angle can be changed by an angle cylinder.
  • the front end portion FE of the engine chamber 20 is located on the rear side of the front end portion WFE of the traveling device 2 (in FIG. 2, the second crawler belt 12 is marked with a reference WFE).
  • the front end portion FE of the engine chamber 20 is located on the front side of the front end portion WFE of the traveling device 2.
  • the operating range of the blade 15 can be expanded.
  • the pitch back angle is a rotation angle of the blade 15 when the blade 15 is rotated in the vehicle front-rear direction.
  • FIG. 6 is a diagram showing the maximum pitch back angle of the work vehicle 1 according to the present embodiment.
  • FIG. 7 shows the maximum pitch back angle in a conventional bulldozer. 6 and 7, the standard posture, which is the normal posture of the blade 15, is indicated by a two-dot chain line.
  • the fourth cylinder 16 d includes a first cylinder connection portion 17 a that is connected to the blade 15 and a second cylinder connection portion 17 b that is a connection portion opposite to the first cylinder connection portion. It is out.
  • the second cylinder connecting portion 17b is located on the rear side of the rotation center P2 of the second driven wheel 12b.
  • the second cylinder connecting portion 17b is located in front of the rotation center P2 of the second driven wheel 12b.
  • the positional relationship between the third cylinder 16c and the driven wheel of the first crawler belt 11 is also the same as the positional relationship between the fourth cylinder 16d and the driven wheel of the second crawler belt 12. Therefore, in the work vehicle 1 of the present embodiment, when the blade 15 is disposed at the same position as the conventional one, the maximum pitch back angle by the pitch cylinders 16c and 16d can be increased.
  • the driving wheel may be a rotating member closest to the front end portion WFE of the traveling device 2.
  • the cylinder connecting portions of the third cylinder 16c and the fourth cylinder 16d that are connected to the traveling device 2 are located behind the rotation center of the drive wheels.
  • B is the cutting edge position of the blade 15, and A is a point that is located vertically above the cutting edge position of the blade 15 and at a height H that is the upper end of the blade 15.
  • C is determined by the height H and the repose angle ⁇ of the earth and sand when the blade 15 is carrying earth and sand.
  • UB1 is a point indicating the upper end of the blade 15 of the work vehicle 1 according to the present embodiment.
  • UB2 is a point which shows the upper end of the blade 15 of the conventional bulldozer.
  • ⁇ 0 represents an angle formed by the blade edge of the blade 15 and the ground when the blade 15 is in the standard posture.
  • ⁇ 1 represents an angle formed by the cutting edge of the blade 15 and the ground when the pitch amount is maximum in the work vehicle 1.
  • ⁇ 2 represents an angle formed by the blade edge of the blade 15 and the ground when the pitch amount is maximum in the conventional bulldozer.
  • ⁇ 0- ⁇ 1 is the maximum pitch back angle of the work vehicle 1
  • ⁇ 0- ⁇ 2 is the maximum pitch back angle of the conventional bulldozer.
  • the maximum pitch back angle ( ⁇ 0 ⁇ 1) of the work vehicle 1 is larger than the maximum pitch back angle ( ⁇ 0 ⁇ 2) of the conventional bulldozer.
  • the resistance received from the earth and sand carried by the work vehicle is due to the soil volume Vm surrounded by ABC in FIG. 6 or FIG.
  • the part corresponding to the soil volume Vm is indicated by hatching.
  • the amount of soil Vm depends on the height H of the earth and sand to be transported and the angle of repose ⁇ of the earth and sand.
  • the soil volume V1 surrounded by ABUB1 in FIG. 6 and the soil volume V2 surrounded by ABUB2 in FIG. 7 are called blade holding capacity.
  • the portion corresponding to the soil volume V1 in FIG. 6 and the portion corresponding to the soil volume V2 in FIG. 7 are indicated by dot patterns.
  • the blade holding capacity V1 of the work vehicle 1 can be made larger than the blade holding capacity V2 of the conventional bulldozer. Therefore, the greater the maximum pitch back angle, the greater the amount of soil that the blade can carry.
  • the size of the blade 15 is larger than that of the conventional one.
  • the front end FE of the engine chamber 20 is located rearward with respect to the traveling device 2 as compared with the conventional case, so that the blade 15 can be brought closer to the traveling device 2 than the conventional one.
  • the cutting edge of the work vehicle 1 can be increased because the cutting edge of the blade 15 can be brought close to the position of the center of gravity of the work vehicle 1.
  • the lift cylinders 16a and 16b are inclined at an angle close to the vertical direction. In this case, the force of the lift cylinders 16a and 16b can be efficiently transmitted to the blade 15.
  • the second working machine 5 is arranged on the rear side of the vehicle body 3.
  • the work vehicle 1 performs cutting and crushing with traction force by the traveling device 2 by piercing a rock or the like with a ripper point 5 b attached to the tip of the shank 5 a protruding substantially vertically downward.
  • the second work machine 5 is driven by a hydraulic cylinder (a ripper lift cylinder 18 and a ripper tilt cylinder 19).
  • FIG. 8 is a top view of the work vehicle 1a according to the second embodiment.
  • FIG. 9 is a perspective view of a work vehicle 1a according to the second embodiment.
  • the second crawler belt 12 is schematically displayed.
  • the first cooling device 48 is not shown for convenience of explanation.
  • the work vehicle 1a according to the second embodiment differs in the arrangement positions of the exhaust treatment device 26 and the aftercooler 28 of the work vehicle 1 according to the first embodiment.
  • the work vehicle 1 a includes an aftercooler storage chamber 52 for storing the aftercooler 28.
  • the shape of the engine compartment 20 is slightly changed.
  • the other configuration of the work vehicle 1 a is the same as that of the work vehicle 1. Therefore, in this embodiment, only the structure different from the work vehicle 1 of the work vehicle 1a is demonstrated, and description is abbreviate
  • the vehicle body 3a of the work vehicle 1a further includes a fourth exterior member 52c that covers the aftercooler 28.
  • a region surrounded by the fourth exterior member 52 c is referred to as an aftercooler storage chamber 52.
  • the aftercooler storage chamber 52 stores the aftercooler 28.
  • the aftercooler storage chamber 52 has a substantially quadrangular prism shape.
  • the aftercooler storage chamber 52 is in contact with the engine chamber 20a on the right side of the engine chamber 20a according to the present embodiment (outside in the vehicle width direction of the engine chamber 20a).
  • the aftercooler storage chamber 52 extends rearward from the center Cy in the front-rear direction of the engine chamber 20a.
  • the aftercooler storage chamber 52 is adjacent to the cooling device chamber 40 at the rear end thereof.
  • the first side surface S1 of the engine chamber 20a is shifted forward as compared to the first side surface S1 of the engine chamber 20 of the first embodiment.
  • the first cooling device 48 is located behind the first side surface S1.
  • the exhaust treatment device 26 is disposed behind the center Cy in the front-rear direction of the engine room 20a.
  • the exhaust treatment device 26 is disposed so as to be biased toward the rear side of the engine chamber 20a.
  • an opening 51 is provided at a connection portion between the engine chamber 20 a and the aftercooler storage chamber 52. The operator can access the aftercooler 28 from the engine chamber 20a side by opening the third inspection port 21. When the worker enters the work area 100, the aftercooler 28 can be easily maintained.
  • FIG. 10 it is a top view of the working vehicle 1b which concerns on 3rd Embodiment of this invention.
  • FIG. 11 is a side view of the work vehicle 1b.
  • the work vehicle 1b according to the third embodiment does not include the cover 6.
  • the configuration of the cooling device chamber 40, the fuel tank 50, and the first additional storage chamber 55 is different from the configuration shown in the first embodiment, but the other configurations are the same.
  • only the configuration of the work vehicle 1b different from that of the work vehicle 1 will be described, and description of other description will be omitted.
  • the first cooling device 48b is smaller than the first cooling device 48 of the first embodiment.
  • the first cooling device 48b extends rearward on the rear side of the first side surface S1 when viewed from above.
  • the first cooling device 48b is separated from the engine chamber 20.
  • the first cooling device 48b is disposed at the corner of the right rear end of the vehicle main body 3b.
  • the first cooling device 48b is disposed at the rear end (rear part) of the vehicle main body 3b and is disposed at the right end of the vehicle main body 3b.
  • the first cooling device 48b overlaps the first crawler belt 11 in a top view.
  • the first cooling device 48b is located on the right side of the center Cx in the vehicle width direction of the vehicle main body 3b.
  • the first cooling device 48 b is disposed on one side of the vehicle body 3 in the vehicle width direction behind the engine 24.
  • the second exterior member 40d related to the cooling device chamber 40b covers the first cooling device 48b.
  • the cooling device chamber 40b stores the first cooling device 48b.
  • the second exterior member 40d does not include the second inspection port 42.
  • the cooling device chamber 40b has a columnar shape having a side surface 40ru inclined upward and rearward.
  • the second exterior member 40d of the cooling device chamber 40 has a side surface 40ru inclined upward and rearward.
  • the cooling device chamber 40b extends rearward on the rear side of the first side surface S1 when viewed from above.
  • the cooling device chamber 40 b is separated from the engine chamber 20.
  • the cooling device chamber 40b overlaps with the first crawler belt 11 in a top view. More specifically, the cooling device chamber 40b is disposed at the corner of the right rear end of the vehicle main body 3b of the third embodiment.
  • the cooling device chamber 40b is disposed at the rear end (rear part) of the vehicle main body 3b and is disposed at the right end of the vehicle main body 3b.
  • the cooling device chamber 40b is located on one side of the center Cx in the vehicle width direction of the vehicle main body 3b.
  • the work vehicle 1b further includes a second cooling device 56.
  • the second cooling device 56 includes, for example, a radiator that cools the refrigerant for cooling the engine 24, and may further include an oil cooler that cools the hydraulic oil.
  • the second cooling device 56 may further include an oil cooler that cools the lubricating oil of the power transmission mechanism 36.
  • the second cooling device 56 is preferably the same cooling device as the first cooling device 48b in view of the weight balance of the work vehicle 1b.
  • the second cooling device 56 extends rearward on the rear side of the first side surface S1 in the top view.
  • the second cooling device 56 is separated from the engine compartment 20.
  • the second cooling device 56 overlaps with the second crawler belt 12 in a top view.
  • the second cooling device 56 is disposed at the corner of the left rear end of the vehicle main body 3b.
  • the second cooling device 56 is disposed at the rear end (rear part) of the vehicle main body 3b, and is disposed at the left end of the vehicle main body 3b.
  • the second cooling device 56 is located on the left side of the center Cx in the vehicle width direction of the vehicle main body 3b.
  • the second cooling device 56 is disposed on the opposite side of the vehicle body 3b in the vehicle width direction to the side on which the first cooling device 48b is disposed (the other side of the vehicle body 3b in the vehicle width direction).
  • the second cooling device 56 is arranged behind the engine 24 and separated from the first cooling device 48b.
  • the second cooling device 56 is covered with the third exterior member 55d of the first additional storage chamber 55b.
  • the second cooling device 56 is stored in the first additional storage chamber 55b.
  • the first additional storage chamber 55b has a columnar shape having a side surface 55ru inclined upward and rearward.
  • the third exterior member 55d has a side surface 55ru that is inclined upward and rearward.
  • the first additional storage chamber 55b extends rearward on the rear side of the first side surface S1 when viewed from above.
  • the first additional storage chamber 55 b is separated from the engine chamber 20.
  • the first additional storage chamber 55b overlaps with the second crawler belt 12 in a top view.
  • the first additional storage chamber 55b is arranged at the corner of the left rear end of the vehicle main body 3b.
  • the first additional storage chamber 55b is disposed at the rear end (rear part) of the vehicle main body 3b, and is disposed at the left end of the vehicle main body 3b.
  • the first additional storage chamber 55b is located on the left side of the center Cx in the vehicle width direction of the vehicle main body 3b.
  • the first additional storage chamber 55b is disposed on the opposite side of the vehicle body 3b in the vehicle width direction to the side on which the cooling device chamber 40b is disposed (the other side of the vehicle body 3b in the vehicle width direction).
  • the first additional storage chamber 55b is arranged behind the engine 24 and separated from the cooling device chamber 40b.
  • the first additional storage chamber 55 b is disposed above the power transmission mechanism chamber 30.
  • the second cooling device 56 is inclined upward and rearward.
  • a vent hole 57 is formed on the left side surface (the side surface opposite to the surface facing the vehicle width direction center Cx of the vehicle main body 3b).
  • a vent hole 58 is formed on the upper surface, and a vent hole 59 is formed on a side surface 55ru inclined upward and rearward.
  • the third exterior member 55d includes vent holes 57, 58, and 59. The air taken in from the vent holes 57 and 58 is sent to the second cooling device 56. The air that has passed through the second cooling device 56 is discharged from the vent hole 59.
  • FIG. 12 is a perspective view of a work vehicle 1b according to the third embodiment.
  • the second crawler belt 12 is schematically displayed.
  • the first cooling device 48b is also inclined upward and rearward.
  • a vent hole 45 is formed on the upper surface of the cooling device chamber 40b
  • a vent hole 46 is formed on a side surface 40ru inclined upward and rearward.
  • a vent hole 44 is formed on the right side surface (the side surface opposite to the surface facing the vehicle width direction center Cx of the vehicle body 3b).
  • the second exterior member 40d includes vent holes 44, 45, and 46.
  • the air taken in from the vent holes 44 and 45 is sent to the first cooling device 48b.
  • the air that has passed through the first cooling device 48 b is discharged from the vent hole 46.
  • the work vehicle 1b of this embodiment includes a second work machine (ripper) 5.
  • ripper work machine
  • earth and stones scatter upward.
  • the 1st cooling device 48b and the 2nd cooling device 56 incline upwards and back, the possibility that the crushed earth and stones penetrate
  • the fuel tank 50b also has a prismatic shape having side surfaces that are inclined upward and rearward.
  • the fuel tank 50b is located at the rear end (rear part) of the vehicle main body 3b.
  • the fuel tank 50b is separated from the engine compartment 20.
  • the fuel tank 50b extends in the vehicle width direction with the center Cx in the vehicle width direction of the vehicle body 3b as a base point.
  • the fuel tank 50 b is disposed above the power transmission mechanism chamber 30.
  • the fuel tank 50b is disposed between the cooling device chamber 40b and the first additional storage chamber 55b.
  • the first distance L11 that is the distance in the front-rear direction between the first side surface S1 and the second side surface S2 is shorter than the first distance L1 shown in the first embodiment and the second embodiment. That is, the work area 100b in the third embodiment is narrower than the work area 100 in the first embodiment and the second embodiment. As shown in FIG. 10, it is difficult to access the control valve 38 even if the hatch 32 is opened.
  • the first distance L11 is preferably a distance at which the third inspection port 21 can be opened.
  • the distance between the first additional storage chamber 55b and the engine chamber 20 is the first distance L11.
  • a distance L11 between the first additional storage chamber 55b and the engine chamber 20 is longer than a distance L12 between the cooling device chamber 40b and the engine chamber 20.
  • the longer distance L11 is preferably not less than 450 mm in width of the walking path for sidewalk walking of the construction machine defined by ISO2867.
  • the distance L12 is preferably equal to or greater than the distance described above.
  • FIG. 13 is a block diagram of the control system 200.
  • the control system 200 includes an operation terminal 8, a communication unit 9, and a work vehicle 10.
  • the work vehicle 10 represents any one of the work vehicle 1 according to the first embodiment, the work vehicle 1a according to the second embodiment, and the work vehicle 1b according to the third embodiment.
  • the operation terminal 8 represents a computer or a dedicated terminal for remote control.
  • the operation content of the work vehicle 10 (running, operation of the work implement, etc.) is input to the operation terminal 8 from the operator.
  • the operation terminal 8 generates an operation command that is communication data describing the input operation content, and transmits the operation command to the work vehicle 10 from the operation command transmission unit 81 via the communication unit 9.
  • the communication unit 9 is a communication unit using wireless communication such as wired communication, satellite communication, or communication using a mobile phone network.
  • Work vehicle 10 includes an operation command receiving unit 65, a control unit 70, work machines 4 and 5, a power transmission mechanism 36, a traveling device 2, and an engine 24. Since the work machines 4 and 5, the power transmission mechanism 36, the traveling device 2, and the engine 24 have been described in detail in the first embodiment, description thereof will be omitted.
  • the control unit 70 includes a command analysis unit 71, a work machine controller 72, a steering controller 73, and an engine controller 74.
  • the operation command receiving unit 65 receives the operation command transmitted by the communication unit 9.
  • the operation command receiving unit 65 receives an operation command transmitted from the outside of the work vehicle 10.
  • the operation command receiving unit 65 includes an antenna function.
  • the control unit 70 includes an arithmetic device such as a CPU and a storage device such as a RAM and a ROM, and controls the work machines 4 and 5 and the traveling device 2 according to the operation command.
  • a program and data for executing the functions of the command analysis unit 71, the work machine controller 72, the steering controller 73, and the engine controller 74 are stored in the storage device.
  • the control unit 70 executes the functions of the command analysis unit 71, the work machine controller 72, the steering controller 73, and the engine controller 74.
  • the control unit 70 may be realized by an integrated circuit.
  • the command analysis unit 71 analyzes the operation command received by the operation command receiving unit 65, and determines the operation amount of the work machines 4 and 5, the traveling direction of the traveling device 2, the speed, and the like.
  • the work machine controller 72 is configured to operate each of the hydraulic cylinders (for example, the first to fourth cylinders 16a to 16d, the ripper lift cylinder 18, the ripper) based on the determined operation amounts of the work machines 4 and 5.
  • the operation amount for the tilt cylinder 19) is determined, and the control valve of each cylinder is controlled.
  • the steering controller 73 determines control amounts of the power transmission mechanism 36 such as a clutch and a brake based on the determined traveling direction and speed of the traveling device 2.
  • the steering controller 73 determines the hydraulic pressure supplied to the clutch and the brake, and controls the control valve (for example, the control valve 38) related to the clutch and the brake.
  • the engine controller 74 calculates an engine horsepower for generating a driving force for setting the speed of the traveling device 2 to the determined speed in addition to the driving force of the hydraulic pump calculated by the work machine controller 72.
  • the engine controller 74 controls the engine 24 so that the horsepower can be output.
  • the work vehicle 10 includes an environment sensor such as a camera, a radar, and an ultrasonic sensor, a position sensor such as a GPS, an attitude detection sensor such as a gyroscope, an acceleration sensor, an angle sensor for each link of the work machines 4 and 5, and vehicle information. You may further provide a transmission part.
  • the environmental sensor grasps the situation around the work vehicle 10.
  • the position sensor measures the position of the work vehicle 10.
  • the posture detection sensor measures the posture of the work vehicle 10 and the postures of the work machines 4 and 5.
  • the vehicle information transmission unit transmits information on the environment sensor, the position sensor, and the attitude sensor to the operation terminal 8 via the communication unit 9.
  • the operation terminal 8 may further include a receiving unit and a display unit.
  • the receiving unit receives information on the environment sensor, the position sensor, and the attitude sensor transmitted from the transmitting unit.
  • the display unit displays information on the environment sensor, the position sensor, and the attitude sensor. In this case, even if the operator is not at the work site of work vehicle 10, the operation command can be transmitted to work vehicle 10 remotely.
  • FIG. 14 is a block diagram of a work vehicle 10a according to the fifth embodiment.
  • the work vehicle 10a represents any one of the work vehicle 1 according to the first embodiment, the work vehicle 1a according to the second embodiment, and the work vehicle 1b according to the third embodiment.
  • Work vehicle 10a includes a design surface data storage unit 66, a control unit 70a, a work machine state acquisition unit 67, work machines 4 and 5, a power transmission mechanism 36, a traveling device 2, and an engine 24.
  • the control unit 70 a includes an operation determining unit 75, a work machine controller 72, a steering controller 73, and an engine controller 74.
  • symbol is attached
  • the design surface data storage unit 66 stores design surface data that is a work target.
  • the design surface is a three-dimensional design landform indicating the target shape of the excavation target.
  • the design surface data storage unit 66 may be realized by an optical disk memory such as a CD-ROM, DVD, or BD, a memory card, or a portable memory such as a USB memory.
  • the design surface data storage unit 66 may be realized by a storage device fixed to the work vehicle 10a. In the case where the design surface data storage unit 66 is realized by a fixed storage device, the work vehicle 10a can communicate with the communication means such as serial communication or wireless communication or input to input design surface data to the design surface data storage unit 66. Means.
  • the work machine state acquisition unit 67 acquires the position and orientation of the work machines 4 and 5.
  • the work machine state acquisition unit 67 includes at least a position sensor (such as GPS) and an attitude detection sensor (such as a gyroscope, an acceleration sensor, and an angle sensor of each link of the work machines 4 and 5).
  • the position sensor measures the position of the work vehicle 10.
  • the posture detection sensor measures the posture of the work vehicle 10 and the postures of the work machines 4 and 5.
  • the work machine state acquisition unit 67 calculates the positional relationship between the cutting edges of the work machines 4 and 5 and the design surface based on the values of these sensors. Further, the work implement state acquisition unit 67 may calculate the angle formed by the cutting edges of the work implements 4 and 5 and the design surface based on the values of these sensors.
  • the operation determination unit 75 controls the position and orientation of the work implements 4 and 5 so that the cutting edges of the work implements 4 and 5 are along the design surface, and causes the traveling device 2 to travel in the direction and speed suitable for the design surface.
  • the operation determining unit 75 determines the operation amount of the work machines 4 and 5, the traveling direction of the traveling device 2, the speed, and the like. Specifically, for example, as described in Japanese Patent No. 51671403, it is determined that the distance between the cutting edges of the work machines 4 and 5 and the design surface is equal to or less than a predetermined threshold corresponding to the speed of the traveling device 2. Sometimes there is something like control that moves the blades up.
  • the present invention is not limited to the bulldozer described above, but may be applied to other types of work vehicles such as a wheel loader, a forklift, or a motor grader.
  • Work vehicles 1, 1 b, 1 c, 10, 10 a may include other drive sources such as an electric motor instead of the engine 24. Alternatively, it may be a hybrid drive source in which the engine 24 and the electric motor are combined. As for 1, 1b, 1c, 10, 10a provided with a hybrid drive source, at least one drive source may be stored in the engine compartment 20.
  • the work areas 100 and 100b are surrounded by the first virtual plane VP1, the second virtual plane VP2, the third virtual plane VP3, the first side surface S1, the second side surface S2, and the first partition plate U1.
  • a narrower space than the space may be defined.
  • the work areas 100 and 100b may be defined within the rotation range of the door of the third inspection port 21, or the space on the hatch 32 may be defined as the work areas 100 and 100b.
  • vent holes 6a, 41, 44, 45, 46, 57, 58, 59 shown in the drawings of the above-described embodiments are merely examples, and may have other shapes.
  • the shapes and functions of the first work machine 4, the second work machine 5, the first crawler belt 11, and the second crawler belt 12 are not limited to those shown in the drawings of the above-described embodiment.
  • the engine 24 is disposed in front of the vehicle main bodies 3, 3a, 3b.
  • the first cooling devices 48, 48 b are arranged behind the engine 24 and on one side of the vehicle main bodies 3, 3 a, 3 b in the vehicle width direction. Therefore, it is possible to prevent earth and sand (for example, earth and sand leaking rearward from the upper end of the first working machine 4) from flowing through the vent holes of the first cooling device 48 during work. Therefore, the work vehicles 1, 1 a, 1 b can prevent the performance deterioration of the first cooling device 48.
  • the vehicle main bodies 3 and 3 a have a work area 100 at a position facing the first cooling device 48 behind the engine 24. Therefore, maintenance of the first cooling device 48 is facilitated.
  • the aftercooler 28 is disposed between the engine 24 and the work area 100. Accordingly, maintenance of the aftercooler 28 is facilitated.
  • the fuel tanks 50, 50b are disposed at the rear of the vehicle main bodies 3, 3a, 3b, and extend in the vehicle width direction with the center in the vehicle width direction of the vehicle main bodies 3, 3a, 3b as a base point.
  • a vehicle body frame is provided at the ends of the vehicle main bodies 3, 3a, 3b. Therefore, the fuel tank 50 is stably supported.
  • the first partition plate U1 that partitions the work area 100 and the power transmission mechanism 36 includes a hatch 32 (first inspection port). Therefore, the power transmission mechanism 36 can be easily maintained by opening the hatch 32.
  • the second exterior member 40 c (first covering member) has a second inspection port 42 between the work area 100 and the first cooling device 48. Therefore, access from the work area 100 to the first cooling device 48 is facilitated.
  • the first exterior member 20 c (second covering member) has a third inspection port 21 between the work area 100 and the engine 24. Therefore, access to the aftercooler 28 and the exhaust treatment device 26 from the work area 100 is facilitated.
  • the first exterior member 20 c (second covering member) has a third inspection port 21 between the work area 100 and the aftercooler 28. Therefore, the maintenance of the aftercooler 28 from the work area 100 is further facilitated.
  • the first cooling device 48 overlaps the first crawler belt 11. Therefore, the distance in the vehicle width direction of the work area 100 can be increased. Therefore, the hatch 32 (first inspection port) can be widened. For this reason, maintenance of the power transmission mechanism 36 and the equipment (for example, the control valve 38) associated with the power transmission mechanism 36 is further facilitated. Furthermore, since the first cooling device 48 can take in a lot of air, the cooling efficiency of the first cooling device 48 is improved.
  • positioned in the novel place which can prevent the performance fall of a cooling device can be provided.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

Dans la présente invention, un engin de chantier comprend une carrosserie de véhicule, un appareil de déplacement, une source d'entraînement et un appareil de refroidissement. L'appareil de déplacement est placé en dessous de la carrosserie de véhicule. La source d'entraînement est disposée à l'avant de la carrosserie de véhicule. La source d'entraînement génère une force pour entraîner l'appareil de déplacement. L'appareil de refroidissement est disposé à l'arrière de la source d'entraînement et sur un côté dans la direction de largeur de la carrosserie de véhicule.
PCT/JP2015/055084 2014-12-12 2015-02-23 Engin de chantier Ceased WO2016092868A1 (fr)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105871449A (zh) * 2016-05-26 2016-08-17 南京中网卫星通信股份有限公司 卫星通信机器人
JP2018016971A (ja) * 2016-07-26 2018-02-01 株式会社小松製作所 作業車両の制御システム、制御方法、及び作業車両

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2016206568B2 (en) * 2015-01-15 2021-01-07 Caterpillar Inc. Configurable monitor and parts management system
JP2017082414A (ja) * 2015-10-23 2017-05-18 株式会社小松製作所 トラクタ
KR20240035041A (ko) * 2022-09-08 2024-03-15 에이치디현대인프라코어 주식회사 도저

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11280112A (ja) * 1998-03-31 1999-10-12 Shin Caterpillar Mitsubishi Ltd 建設機械の冷却装置
JPH11310938A (ja) * 1998-04-30 1999-11-09 Kubota Corp バックホーの冷却装置
JP2007100351A (ja) * 2005-10-03 2007-04-19 Hitachi Constr Mach Co Ltd 作業機械

Family Cites Families (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1333418A (en) 1920-03-09 Ephraim m
US3319732A (en) 1965-02-12 1967-05-16 Allis Chalmers Mfg Co Engine cooling system for tractors
US4081050A (en) 1977-02-02 1978-03-28 International Harvester Company Front engine tractor having transverse midship mounted heat exchanger
JPS6132098Y2 (fr) 1981-03-26 1986-09-18
FR2637549B1 (fr) 1988-10-07 1993-05-21 Kubota Ltd Systeme de refroidissement pour moteur monte sur un vehicule
JP2547272B2 (ja) 1990-07-09 1996-10-23 本田技研工業株式会社 乗用作業機
JPH08119146A (ja) 1994-10-24 1996-05-14 Kubota Corp 作業車
JP3053059B2 (ja) 1994-11-30 2000-06-19 株式会社クボタ 作業車
US5887671A (en) 1996-09-06 1999-03-30 Kubota Corporation Working vehicle with power steering
US6793028B2 (en) * 1999-05-11 2004-09-21 Caterpillar S.A.R.L. Mounting arrangement for a radiator assembly of a work machine
JP4547589B2 (ja) 2000-11-24 2010-09-22 豊和工業株式会社 作業車両のコントロールボックス冷却構造
DE10206551B4 (de) * 2002-02-16 2008-09-25 CNH Österreich GmbH Kühleranordnung für Traktoren
JP4184858B2 (ja) 2003-04-10 2008-11-19 株式会社小松製作所 作業機械の運転室
JP4199584B2 (ja) 2003-04-10 2008-12-17 株式会社小松製作所 作業機械のエンジンルームカバー
JP2005048504A (ja) 2003-07-30 2005-02-24 Komatsu Ltd ブルドーザのエンジン冷却装置
US8695722B2 (en) * 2003-10-09 2014-04-15 Komatsu Ltd. Bulldozer with improved visibility
JP4619168B2 (ja) * 2005-03-28 2011-01-26 株式会社クボタ 旋回作業機
US7558658B2 (en) 2005-04-28 2009-07-07 Kubota Corporation Operating system for tractor
US7753152B2 (en) * 2005-09-15 2010-07-13 Komatsu Ltd. Cooling device for construction machine
CN101542045B (zh) * 2006-11-28 2011-12-07 日立建机株式会社 工程机械
JP2009113744A (ja) 2007-11-09 2009-05-28 Komatsu Ltd 作業車両
JP2011178178A (ja) 2008-06-30 2011-09-15 Komatsu Ltd 作業車両
JP5033226B2 (ja) 2010-08-02 2012-09-26 株式会社小松製作所 作業車両
US8544584B2 (en) 2010-12-24 2013-10-01 Komatsu Ltd. Construction vehicle
US8960342B2 (en) * 2011-02-22 2015-02-24 Deere & Company Swing-out coolers and cooling fans
JP5228093B2 (ja) * 2011-07-29 2013-07-03 株式会社小松製作所 油圧ショベル
JP5824961B2 (ja) 2011-08-19 2015-12-02 コベルコ建機株式会社 建設機械の冷却装置
GB201121608D0 (en) 2011-12-15 2012-01-25 Agco Sa Agriculture tractor front end installation
JP5776540B2 (ja) 2011-12-27 2015-09-09 井関農機株式会社 作業車両
JP5204911B1 (ja) 2012-03-28 2013-06-05 株式会社小松製作所 ブルドーザ
JP5758338B2 (ja) * 2012-03-29 2015-08-05 株式会社クボタ 作業機
CA2779475C (fr) 2012-05-29 2015-04-07 Macdon Industries Ltd. Tracteur de faucheuse-andaineuse avec echangeurs de chaleur paralleles pour le refroidissement du moteur et des fluides connexes
JP2013248964A (ja) 2012-05-31 2013-12-12 Yanmar Co Ltd ボンネット付車両
JP5496284B2 (ja) 2012-08-10 2014-05-21 株式会社小松製作所 ブルドーザ
JP5799001B2 (ja) 2012-10-25 2015-10-21 株式会社小松製作所 尿素水溶液配管の冷却構造
JP5591303B2 (ja) 2012-10-25 2014-09-17 株式会社小松製作所 エンジン室の換気構造
JP5526288B1 (ja) * 2012-10-26 2014-06-18 株式会社小松製作所 ホイールローダ
JP2014141857A (ja) 2013-01-25 2014-08-07 Hitachi Constr Mach Co Ltd 作業機械
CN103827405B (zh) * 2013-02-15 2016-02-24 株式会社小松制作所 液压挖掘机

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11280112A (ja) * 1998-03-31 1999-10-12 Shin Caterpillar Mitsubishi Ltd 建設機械の冷却装置
JPH11310938A (ja) * 1998-04-30 1999-11-09 Kubota Corp バックホーの冷却装置
JP2007100351A (ja) * 2005-10-03 2007-04-19 Hitachi Constr Mach Co Ltd 作業機械

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105871449A (zh) * 2016-05-26 2016-08-17 南京中网卫星通信股份有限公司 卫星通信机器人
JP2018016971A (ja) * 2016-07-26 2018-02-01 株式会社小松製作所 作業車両の制御システム、制御方法、及び作業車両
US11001993B2 (en) 2016-07-26 2021-05-11 Komatsu Ltd. Control system for work vehicle, control method, and work vehicle

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